Sentences with phrase «on ocean mass»

Nadya T. Vinogradova; Rui M. Ponte; Mark E. Tamisiea; Katherine J. Quinn; Emma M. Hill; James L. Davis (2011) Analysis of self - attraction and loading effects on ocean mass using geophysical models and GRACE data.

In this study we examine the impact of SAL effects on ocean mass redistribution under different surface loads (land hydrology, atmospheric pressure, ocean dynamics), using a number of geophysical models and GRACE observations.

Analysis of self - attraction and loading effects on ocean mass using geophysical models and GRACE data

Not exact matches

We don't know exactly how much plastic is floating in our oceans because of the huge mass of plastic produced in the earth on a yearly basis.

When it's cold enough to form ice shelves that extend over the Antarctic land mass and into the ocean, much of what drops to the seafloor is sand and gravel that the glacier has picked up on its slow march from the continent's ice cap.

Using more than a dozen instruments placed around the habitat, including a first - of - its - kind underwater mass spectrometer that tracks fluctuations in key gases up and down the ocean waters, aquanauts watch readouts in real time on computer screens.

This new map allows scientists to determine the age of large swaths of the second largest mass of ice on Earth, an area containing enough water to raise ocean levels by about 20 feet.

The sun and moon tug on the planet, while the drift of continents, changes in ocean currents, and the rebounding of the crust since the retreat of ice age glaciers all shift mass around, altering Earth's moment of inertia and therefore its spin.

Other co-authors on the study, titled «Ecological selectivity of the emerging mass extinction in the oceans,» include Andrew Bush of the University of Connecticut and Doug McCauley of the University of California, Santa Barbara.

El Nino's mass of warm water puts a lid on the normal currents of cold, deep water that typically rise to the surface along the equator and off the coast of Chile and Peru, said Stephanie Uz, ocean scientist at Goddard Space Flight Center in Greenbelt, Maryland.

«Figuring out how mass rarity in a wide range of species in today's oceans may scale up to a mass extinction on longer timescales is one of the great scientific challenges of our generation.»

GA maps the land masses below the ocean's surface through basic geological work and seismic and bathymetric analysis (measuring water depth at various places in a body of water) to better define and legally extend Australia's continental shelf for a submission to the United Nations under the UN Convention on the Law of the Sea.

As Dr. Mackey cited in the published article Sea Change: UCI oceanographer studies effects of global climate fluctuations on aquatic ecosystems: «They would tell us about upwelling and how the ocean wasn't just this one big, homogenous bathtub, that there were different water masses, and they had different chemical properties that influenced what grew there,» she recalls.

By linking worldwide data on solid waste, population density, and economic status, we estimated the mass of land - based plastic waste entering the ocean.

The effect of a new land mass on ocean currents is remarkably tricky to understand.

For this project, they and their teams are collaborating with engineers from MBARI to test new ways of adaptively sampling oceanographic features such as open - ocean eddies, swirling masses of water that move slowly across the Pacific Ocean, which can have large effects on ocean microcean eddies, swirling masses of water that move slowly across the Pacific Ocean, which can have large effects on ocean micrOcean, which can have large effects on ocean microcean microbes.

Covering nearly 5.5 million square miles, the frozen mass exerts an enormous influence on the global climate, reflecting sunlight back into space and cooling Earth's atmosphere and oceans.

But in many instances, the simulations show, even planets starting with rocky cores as little as 1.5 Earth's mass may trap and hold atmospheres containing between 100 and 1000 times the amount of hydrogen found in the water in Earth's oceans — thick, dense envelopes exerting pressures so hellish that life on the planets» surfaces might be almost impossible.

The French scientific team benefited from data from NASA's twin Gravity Recovery and Climate Experiment satellites, launched in 2002, that measure ocean mass and water storage variations on land.

The only time period that remotely resembles the ocean changes happening today, based on geologic records, was 56 million years ago when carbon mysteriously doubled in the atmosphere, global temperatures rose by approximately six degrees and ocean pH dropped sharply, driving up ocean acidity and causing a mass extinction among single - celled ocean organisms.

Coastal and boundary current systems with a focus on processes that link the nearshore and continental shelf to the open ocean, such as along - and across - shore transport processes, stirring and mixing of water masses, and the coastal response to larger - scale forcing events; long - duration, high - resolution observations using autonomous underwater gliders.

Furthermore, by knowing the mass of a planet from radial velocity measurements and the radius of a planet based on how much starlight it blocked, it is a simple calculation to determine a planet's density, which can tell astronomers whether that planet is rocky or gaseous in nature, or whether it has a small core and a thick atmosphere, or whether it has a large core covered in deep oceans.

Continue reading «Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities `

Increased levels of atmospheric carbon dioxide could also significantly alter ocean temperatures and chemistry over the next century, which could lead to increased and more severe mass bleaching and other stressors on coral reefs.

Understanding the biomechanics of this little snail could help engineers design some nifty sea - faring robots, and it could also help with ecological studies: Zooplankton like helicina move upwards to the surface of the ocean each night to eat (and avoid being eaten), and this mass migration of tiny organisms is one of the biggest biomass movements on the planet.

Unlike the great ice sheet of Antarctica, the Greenland ice sheet is melting both on its surface and also at outlet glaciers that drain the ice sheet's mass through deep fjords, where these glaciers extend out into the ocean and often terminate in dynamic calving fronts, giving up gigaton - sized icebergs at times.

Omega - joint — based on chicken and flaxseed providing masses of absorbable Omega - 3's, as is the Omega - derm — from Vetologica, makes a big difference to some of these cats and is not depleting our oceans of fish.

A leatherback returns to the ocean after nesting on Playa Grande, Costa Rica - the last mass nesting beach for Eastern Pacific leatherbacks.

Surfing is year round on the island driven by ocean swells that are unbroken by any land mass and originate in the South Pacific.

For most mass - market ocean cruises, it is common for passengers to analyze whether to book a room with a balcony or pay less for an inside cabin — with the intent of spending a lot of time on the common deck areas.

Continuing to expand their brand under the vision of «unearthing the exceptional» this year has also seen Mantis embark on the development of a five star hotel on the island of St. Helena, in the South Atlantic Ocean, 2,000 km from the nearest major land mass.

(NaturalNews) The makings of a mass - level extinction event in the world's oceans appear disturbingly imminent, as marine species after marine species washes ashore on the Pacific West Coast.

There are major differences dependent on latitude, ocean basin, proximity to specific land masses, and in the case of some proxies, seasonal effects.

Well, crawling out of the ocean probably took millions or billions of attempts... and there were a couple mass extinctions on the way... But this is still right at the top or is the biggest.

The non linear nature of forcing is related more to positive feedbacks and changes that are still being studied, such as cyclic changes in moisture content and regional dispersion, the methane cycles in the ocean or the potential of methane clathrate / hydrate release, and of course the race to feed more people on a planet which will inevitably add more nitrous oxide to the atmosphere and create more dead zones in the oceans, droughts, floods, fires, dogs and cats living together, mass hysteria....

That applies not only to the Australian drought, but to all aspects of climate change, whether it be loss of sea ice, loss of glaciers and ice caps, acidification of the oceans, desertification, mass migrations due to sea level rise, and so on.

Thermal mass of the oceans on the other hand is huge, so they follow with some principal lag of decades, but they follow «noisy» as decadal variations like ENSO or changes in weather patterns due to climate change overlay that.

'' In this sense, our findings could help to explain mass extinctions of the past, and potential extinctions in the future, as well as shed light on the resilience of some species to on - going ocean acidification.»

Consistent with how I was reading things, pleasantly — barring some cautious hedging I'd made, based on the possibility that salinity could reflect mass changes, either when fresh water was added to the ocean via glacial melt or impoundment decreases (ocean mass increase) or via increased evaporation rates (ocean mass decrease).

IOWs, if rain feedbacks / convection feedbacks caused «nutrients» to be available on the ocean surface below, such that the nucleotides could both replicate and replicate with a meaningful mass and charge, you would have a good feedback.

IIRC, the limit on mass loss was attributed to the narrowness of passes in the mountains, but if the ice loss is behind the mountains as the ocean reaches beyond them, and mixes salt into the system with tides, then only the flushing of salt and icebergs via meltwater would limit the rate of melt in the (brand new) Greenland Sea.

This estimate is based on the carbon mass in the atmosphere and up take rates for the oceans and terrestrial biosphere.

And here's some background from Dell on its effort to test whether there's a way to reliably, practical way to turn the masses of plastic we've added to the oceans into something useful back on shore:

It stands to reason that the oceans haven't been that warm in a while but since the average temperature of the whole mass of water is so dependent on circulation (it's only the surface temperature that's constrained by its interactions with the atmosphere and space), I suppose a plausible history of that particular value would be very hard to reconstruct.

Making up 50 to 60 percent of the ocean's fish - mass and serving as food for other fishes like tuna, mahi mahi and squid, to name a few, the ingestion of plastic by this organism is dangerous on two fronts.

In an article on Yale 360 Environment, Veron writes that the major issues include mass bleachings caused by warmer water, which kills off zooxanthellae, the algae with which coral have a symbiotic relationship, and ocean acidification.

Sea level change based on satellite altimetry is measured with respect to the Earth's centre of mass, and thus is not distorted by land motions, except for a small component due to large - scale deformation of ocean basins from GIA.

That may be true on a total mass basis, however, the comparison of the water mass versus the mass of only the top crust, that part that is visible for example, down a few kilometers, say to the depth of the deepest part of the ocean — water would be a significantly higher proportion of the mass than you have stipulated.

SLR by 2100 is more likely to come from ice mass loss from West Antarctica (WAIS) where warm ocean currents are already melting ice at glacier mouths and attacking areas of the WAIS resting on the seabed.

Atmospheric CO2 might be at a different level on a mountain on an island in the middle of the ocean than they are in the middle of a continental land mass.